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Radiant|Lab Grown|IGI

3.12ct D IF Radiant Lab Grown Diamond

D/IF • IGI LG768631511

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG768631511

Diamond specifications and retailer prices

From $1,566 AUD
$1,100 USD
As of October 30, 2026
Save $12,343 AUD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $13,909 AUD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.12ct lab-grown radiant diamond

This 3.12ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless) and certified by IGI LG768631511 or 768631511. Listed at 17 retailers as of October 30, 2026, with prices from $1,566 to $13,909, a $12,343 spread on the same certified stone. Do Amore Diamonds lists it at $13,909. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.12
Carat
D
Colour
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.2°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768631511
Dimensions10.43 × 7.19 × 4.70 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.43 mm7.19 mm3.12 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768631511
Side View
Table 66.0%Crown 45.2°Girdle: STK-THKPavilion 33.2°Culet: NoneDepth 65.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $13,909 AUD|Low: $1,566 AUD|High: $14,919 AUD|Avg: $5,262 AUD|-6.8%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 15$1,566 AUD
Retailer 5$1,760 AUD
Retailer 9$1,956 AUD
Retailer 14$2,059 AUD
Retailer 7$2,114 AUD
Retailer 2$2,891 AUD
Retailer 12$3,266 AUD
Retailer 16$3,394 AUD
Retailer 13$3,686 AUD
Retailer 3$3,760 AUD
Retailer 10$4,530 AUD
Retailer 17$5,133 AUD
Retailer 4$6,664 AUD
Retailer 6$7,652 AUD
Retailer 11$9,782 AUD
Retailer 8$12,058 AUD
Do Amore Diamonds$13,909 AUD

33 data points across 17 retailers

17 retailers$1,566 AUD to $13,909 AUD

A
Cheapest Retailer
-
$1,566 AUD
$1,100 USD
A
Retailer 2
-
$1,760 AUD
$1,236 USD
View
A
Retailer 3
-
$1,956 AUD
$1,374 USD
View
Final sale: no returns
A
Retailer 4
-
$2,059 AUD
$1,446 USD
View
A
Retailer 5
-
$2,114 AUD
$1,485 USD
View
A
Retailer 6
-
$2,891 AUD
$2,031 USD
View
A
Retailer 7
-
$3,266 AUD
€2,185 EUR
View
A
Retailer 8
-
$3,394 AUD
$2,384 USD
View
A
Retailer 9
-
$3,686 AUD
$2,589 USD
View
A
Retailer 10
-
$3,760 AUD
$2,641 USD
View
B+
Retailer 11
-
$4,530 AUD
View
B+
Retailer 12
-
$5,133 AUD
$3,605 USD
View
Retailer 13
-
$6,664 AUD
£3,686 GBP
View
Price last confirmed 7 days ago
Retailer 14
-
$7,652 AUD
$5,375 USD
View
Price last confirmed 11 days ago
B
Retailer 15
-
$9,782 AUD
View
B
Retailer 16
-
$12,058 AUD
$8,470 USD
View
Most Expensive
B
Do Amore Diamonds
27-0023999C4 · Oct 31
$13,909 AUD
$9,770 USD
View
16 more retailers have this diamond
Prices start from $1,566 AUDSave up to $12,343 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.12ct Radiant
$1,566 AUD